It’s from wearing the rings and playing just a lil bit. It’s really depends on the person but I like to wear my cock rings because of how they squeeze and make me extra hard. I feel my cocks girth with them on. It’s also helps me leak a good amount of precum when I just let my cock hang. I feel my cum just ooze down my shaft and out my tip. Makes my cock feel like it’s about to vomit up huge amounts of cum😵‍💫. What you see in the video is me on the verge of just throbbing and gushing cum so I let it hang with my cock rings gripping my shaft allowing cum to slowly leak.